Superheater.



H. W JACOBS.

SUPERHEATER. APPLICATION FILED APR.27,1909.

934,?29, Patented Sept. 21, 1909.

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H. W. JACOBS.

SUPERHBATER.

APPLICATION FILED APB..27, 1909.

Patented Sept. 21, 1909. a SHEETS-SHEET z.

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H. W. JACOBS. S UPERHEATER. APPLICATION FILED APR.27, 1009.

Patented Sept. 21, 1909.

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HENRY W. JACOBS OF TOPEKA, KANSAS.

SUPERHEATER.

Specification of Letters Patent. Patentml Sept, 21, 1909,

Application filed April 27, 1909. Serial No. 492,457.

To all whom it may concern:

lie it known that l, Hnxnv \s'. .laoons, of 'lopeka, in the county .ofShawnee, and in the State of Kansas, have invented a certain new anduseful Improvement in buperheaters. and do hereby declare that the following is a full, clear, and exact description thereof.

The object of my invention is to provide a superheator, and especially.a superheater for railway locomotives, which shall have, among others,the following advantages: that it shall have great heating surface for agiven volume; that the circulation ofgases shall be impeded as little aspossible, and yet they shall be so divided as to readily give up theirheat; that the steam shall be so battled and conveyed as to keep itthoroughly mixed and continually impinging upon surfaces heated by thegases; that the flue gases shall be so directed be so broken up thatneither netting nor a diaphragm plate shall be necessary; that all partsof the superheatcr and adjacent parts of the boiler shall be easilyaccessible for repairs; and to-such ends my invention consists in thesuperh atcr hereinafter specified.

In the accompanying draWin Figure 1 is a longitudinal sectional view ofthe front end of a locomotive boiler having my invention appliedthereto, the superheater being shown as applied to a simple engine; Fig.2 is a view showing a. crosssection taken on the line a.r of Fig. 1: andFig. 3 is a similar View taken on the line ;1/ 1 of Fig. 1, bothsections looking toward the cab of the engine. a

The, illustrated embodiment of my invention is the best form known tome, but it is only one of many possible embodiments thereof, and istherefore to be regarded only as typical. I

In the said drawings, the cylindrical shell 1 is the smoke arch or smokebox of a locomotive, situated at the front end of the boiler, the rearwall of the chamber inclosed thereby being the flue sheet 2, the fluesheet being united to the boilerEhll 3, and having attached to it theboiler lines 4. \Vithin the smoke box and intermediate between its endsis the exhaust pot or pipe which is directed upwardly into a pctticoatpipe 6, the latter extending to the bottom of the smoke stack 7, whichis supported upon the shell 1. Between the exhaust pot and the fluesheet 2 and reversed that sparks and cindcrs shall,

is mounted the rear section of my superheater. Such ection preferablyconsists of a shell 8, of smaller diameter than the shell 1, supportedfrom the latter shell by angle irons 9. The shell is closed by a frontflue sheet 10, and a rear flue sheet 11, and these sheets support alarge number of lines 12. A large fine 13 is also secured in the fluesheets and 11 for a purpose later to be described. This rear superheatersection is placed sufliciently forward of the forward boiler flue sheet2 to leave space between the super-heater and the front end of theboiler to admit of a mans oing" into such s race to repair eitherdefective boiler fines or defective superheater flues facinginto thischamher. To admit a man for this purpose, a cinder pot 14 is providedwith a man-hole 15 closed by a cover 16, having cinder hoppers 17attached to the cover by which cinders may be removed. The frontsuperheater section is placed between the petticoat pipe and thefrontend of the smoke box, and such section preferably consists of ashell 18 having front and rear flue sheets 19 and 20 respectively, andhaving a large number of fines 21 connecting the latter, A large fine 22al 1 connects the said sheets. A fan 23 is mounted in the flue The fine22 receives one end of a pipe 21 which is connected with va petticoatpipe, and which is closed at its rear end 25.

The connections for conveying steam are as follows: The exhaust pot 5sits upon the saddle 26. A header, preferably in the form of a throttle27, is connected with the rear superheater section, preferably by beingmounted upon it, and steam pipes 28 connect such header or throttle withthe cylinders.

A dry pipe 29 from the steam dome is con:

nected by a pipe 30 with the front superheater section, the pipe 30being bent to pass.

around the throttle. A pipe 31 extends from the front section to therear section. Baille plates in the front. sect-ion cause the steam totravel from the pipe 30 by a circuitous route through such frontsnperheater section to the pipe 31, so as to secure the most effectivesuper-heating of the steam. Likewise baflle plates are provided in therear section to cause the steam to travel by a circuitous route from thepipe 28 to the throttle.

In the operation of the illustrated embodiment of my super-heater, thesteam Coming; from the dome through the pipe 29 is conveyed by the pipe30 to the front super-heat section, and then, passing through itstortuous passage therein, reaches the pipe 31, by which it is conveyedto the rear super-heater section, where it again traverses a longirregular route and issues through the throttle 29. The steam herepasses by the" pipes 28 to the cylinders, and is exhausted through theexhaust pot 5, from which it emerges in a jet, passing up the petticoatpipe and cansing a draft in the smoke stack. The gases emerge from theboiler tines at into th space I 32, between the frontend of the boilerand the rear superheater section, and ii this space the gases areintimately mixed. They then pass both around the outside of the shell 8of the rear superheater section, and through the fines of the saidsection, and

thence around the exhaust pot and petticoatpipe and through the tines 20of the front superheater section, whence they emerge into the space 33,between the front superheater section and the front end of the smokebox. The gases here turn and pass into the large flue 22, and in sopassing rotate the fan 23. The gases are then drawn up the smoke stackby the exhaust. The passage for the gases,'

while not offering objectionable resistance to them, is sufficientlytortuous that the cinders and sparks are so broken that as they pass upthe smoke stack they are not objectionably large. The rotation of thefan breaks up passing cinders or sparks.

It will be observed that a man can enter the space 32 and repair eitherfines in 'the boiler or tlues in the superheater. If a line in theboileris-to be replaced, it can be passed through the large flue 13, anda new one passed to the boiler in the same manner.

snperheater having a passage formed therein parallel to said boilerfines, through which boiler fines may be passed for repairs.

In a locomotive, the con'ibination of a boiler shell having a smoke-boxin the forward end, a flue sheet forming the rca r wall of thesmoke-box, and a snperheater mounted in said smoke-box, said superheaterbeing sufliciently forward of said flue sheet to permit access in thespace therebetween for repairs. p

3. In a locomotive, the combination of a boiler shell having a smoke-boxin the forward end, a flue sheet forming the rear wall of the smoke-box,an exhaust pot in said smoke-box, a super-heater section between saidexhaust pot and said flue sheet, said. section and sheet being spacedsufliciently apart to permit access for repairs, a man-hole providingfor such access, and a snperheater section forward oi the exhaust pot.

' 4. In a locomotive boiler, the combination of a boiler shell having asmoke-box in the forward end, a fine sheet forming the rear wall of saidsmoke-box, a snperheater mounted in said smoke-box sutliciently for wardof said flue sheet to provide for access therebetwcen,said snperheatercomprisinga shell and flue sheets having fines passing therethrough, alarge line being provided in said supcrheater to permit the passagethere-- through of fines for" the generating section of the boiler.

In a locomotive boiler, the combinatioi'i ot' a boiler shell having asmoke-box in the forward end thereof, a flue sheet forming the rear wallthereof, an exhaust pot in said smoke-box intermediate its ends, apettieoa't pipe above said exhaust pot, snperheater sections forward andto the rear of said exhaust pot, said sections havinglongitudinally-extending llues, a pipe connected with said.

petticoat pipe and extending longitudinally through oneot saidsnperhcater sections, and a tan mounted in. said pipe.

(3. In a locomotive boiler, the. combination of a boiler shell having asmoke-box in the forward end thereof, a fine sheet forming the rear wallthereof, an exhaust pot in said smoke-box intermediate its ends, apetticoat pipe above said exhaust pot, superheater sections forward andto the rear of said exhaust pot, saidscctions havinglongitiulinally-cxtending lines, a pipe connected with said petticoatpipe and extending longitiuliiially through the forward superheatersection, it til a fan mounted in said pipe.

ln testimony that I. claim the 't'oregoing have hereunto set my hand.

HENRY V. JACOBS.

' \Vitncsscs:

Enwin J. 1)RINI)LE, Ni-iwoonn.

